Mathematics - Parabola Question with Solution | TestHub

MathematicsParabolaGeneralMedium3 minQB

MathematicsMediummultiple choice

For $x^{2} + y^{2} + 2 x y - 4 x + 4 y - 4 = 0$ , which are true?

Answer:

A, C

Solution:

Write $(x + y)^{2} = 4 (x - y + 1)$ . Rotation to coordinates along $x + y$ and $x - y$ gives focus $(0, 0)$ and directrix $x - y + 2 = 0$ .

Stream:JEESubject:MathematicsTopic:ParabolaSubtopic:General

⏱ 3mℹ️ Source: QB

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